It's 1996. Detective Sergeant Tom Thorne is a haunted man. Haunted by the moment he ignored his instinct about a suspect, by the horrific crime that followed and by the memories that come day and night, in sunshine and shadow. So when seven-year-old Kieron Coyne goes missing while playing in the woods with his best friend, Thorne vows he will not make the same mistake again. Cannot. The solitary witness. The strange neighbour. The friendly teacher. All are in Thorne's sights. This case will be the making of him - or the breaking.